CN104780497B - Inter-device discovery method for user equipment and network entity - Google Patents
Inter-device discovery method for user equipment and network entity Download PDFInfo
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Abstract
The present invention relates to an inter-device discovery method applicable to a user equipment and a network entity and a user equipment and a network entity using the same. In one aspect of the invention, the invention relates to an inter-device discovery method applicable to a network entity, including at least but not limited to: receiving a first cancel proximity request comprising a network level discoverer identifier application identifier and an application level discoverer identifier; transmitting a second cancel proximity request including a network level discoverer identifier and a network level discoverer identifier in response to the received first cancel proximity request; receiving a first acknowledgement signal corresponding to the second cancel proximity request in response to the transmitted second cancel proximity request; and transmitting a second acknowledgement signal corresponding to the first cancel proximity request in response to the received first acknowledgement signal.
Description
The cross reference of related application
Present application advocate No. 61/926,927 United States provisional application filed in 13 days January in 2014,2014 years 12
No. 14/578,505 US application case filed in the moon 22 and No. 103145941 Taiwan Shen filed in 27 days December in 2014
Please case priority.The full content of above-mentioned patent application case is hereby incorporated herein by reference and forms this specification
A part.
Technical field
The present invention relates to suitable for user equipment (user equipment, UE) and network entity (network entity)
Device between (device to device, D2D) find method with using the method UE and network entity.
Background technology
When UE seeks to find or be found, it usually needs adjacent service (proximity based service,
) or D2D discovery procedures (discovery process) ProSe.ProSe discovery procedures are to pass through Evolved Packet Core
The auxiliary of (Evolved Packet Core, EPC) does not identify have by the auxiliary of Evolved Packet Core (EPC)
Whether finder (discoverer) UE of ProSe abilities (ProSe-enabled) is adjacent to another quilt with ProSe abilities
The process of finder (discoveree) UE, wherein Evolved Packet Core (EPC) are considered as being directed to long term evolution (long
Term evolution, LTE) communication system core network.The network assistance may relate to or may not be related to evolved
Universal terrestrial access network (Evolved Universal Terrestrial Radio Access Network, E-
UTRAN).No matter when UE meets the neighbouring criterion about another UE, and the UE is referred to alternatively as being adjacent to another UE.It is neighbouring accurate
Specific range or certain communication range class can be then referred at least to, and can be different for discovery procedure and any subsequent communications stage.
When ProSe discovery procedures occur in EPC levels, ProSe discovery procedures will be related to EPC so as to determining two tools
The discovery program for having the neighbouring of the UE of ProSe abilities and notifying its neighbouring to the UE.UE with ProSe abilities refers to support and works as
Preceding ProSe is required and the UE of associated program [referring to 3GPP TS 32.278].UE with ProSe abilities can also be not common
Safety (non-public safety) UE (for example, UE with business application), public safety UE or both.It is each to have
The UE of ProSe abilities may for example be based on geographic distance, wireless conditions and have a kind of range class (range class), it is described
Range class is the rough instruction of the distance in being found for ProSe.
ProSe discovery procedures can relate to different types of identifier (ID).EPC ProSe User ID is to be used for wireless local
The identification that the EPC levels ProSe of net (wireless local area network, WLAN) direct communication has found and EPC is supported
Symbol, for uniquely identifying the UE registered for ProSe.This identifier can be once in a while by the ProSe function weights in EPC networks
It is new to assign.ProSe functional identities are fully qualified domain name (the fully qualified domain for uniquely identifying ProSe functions
name,FQDN).Application ID is to identify the globally unique identifier of specific application.Application layer User ID is in the upper of specific application
The identifier of identification user in hereafter.WLAN link layers ID is directly to be found for WLAN and/or the link of WLAN direct communications
Layer identity.WLAN link layers ID can be temporary (for example, temporary MAC Address) or permanent (for example, permanent MAC Address).
D2D communications, adjacent communication or ProSe communications are current third generation partner program (third generation
Partnership project, 3GPP) new technical feature being developed in the 12nd edition and the 13rd edition.It is neighbouring to find may be present
At least two Mains --- EPC levels ProSe has found that (ProSe discovery) and ProSe directly have found (ProSe
Direct discovery).Two kinds find to be the solution of complementation, but can also independently implement.Fig. 1 explanations are so as to processing
The exemplary network architecture that EPC levels are found.Entity can relate to the first user equipment 101 and second user equipment 102, two use
Family equipment can carry out ProSe applications or can have ProSe abilities.Entity may also refer to E-UTRAN 103.ProSe functions 104
It represents jointly by D2D the or ProSe functions of EPC network supports.E-UTRAN103 is connected to mobility management entity
(mobility management entity, MME) 105, E-UTRAN 103 can also connect directly to the ProSe functions in EPC
104.ProSe functions 104 are connected to secure user plane location platform (Secured User Plane Location
Platform, SLP) 106, wherein via secure user plane location platform (SLP) 106, available or estimated location information.
ProSe functions 104 may be connected to ProSe application servers 107, can be third-party server (third party
Server) and the not intrinsic part of EPC networks.The specific description reference 3GPP technical specifications (TS) 23.303 of aforementioned entities
Description, and therefore will not repeated description.
The allusion quotation that Fig. 2 displayings are found such as the EPC levels ProSe in draft standard (for example, 3GPP TR 23.703v1.0.0)
Type call flow.Step shown in Fig. 2 will be briefly described as follows.In step s 201, it is assumed that UE A accordingly return to residing in it
Belong to public land mobile network (ProSe functions A in home public land mobile networks, Home PLMN s) into
The hand-manipulating of needle registers the UE that ProSe is communicated.In step S202, UE B are to the ProSe functions of residing in its respective home PLMNs
B registered for the UE of ProSe.Similarly, in step S203 and S204, UE A and UE B are respectively to its Home PLMN s
In ProSe function A and ProSe functions B carry out ProSe application registrations.In step S205, UE A make the neighbouring of UE B and ask
Ask the appropriate response of reception.For example, if UE B are adjacent to UE A, needle in time predefined window (time window)
Alarm can be obtained in presence to UE B, UE A.In response to neighbouring request, ProSe functions A will ask the position of UE A and UE B more
Newly.Location updating can be periodic, or can based on the event triggered, or both.In order to ask the position of UE A
Update, ProSe functions A will contact SUPL location platforms (SLP) A.Similarly, in order to ask the location updating of UE B, ProSe work(
Can A will contact ProSe function B, and ProSe functions B will transfer to ask the location updating of UE B to SLP B.
In step S206, ProSe functions A receives the report of the position of UE A from SLP A.In step S207, ProSe
Function B receives the report of the position of UE B from SLP B.The position of UE A and UE B can intermittently be reported corresponding to it
ProSe functions.The update of the position of UE B can be forwarded to by ProSe functions B based on the condition being arranged by ProSe functions A
ProSe functions A.And no matter when ProSe functions A receives the location updating of UE A and/or UE B, ProSe functions A is executable
The neighbouring analysis of the position of UE A and UE B.In step S208, when ProSe functions A detect UE A and UE B adjacent to when,
ProSe functions A will be neighbouring to UE A notice UE B and can optionally provide and directly found for WLAN and with UE B's to UE A
The auxiliary information of communication.Similarly, ProSe functions A informs about ProSe function B, and ProSe functions B transfers to notify to UE B,
It detects that UE A's is neighbouring.ProSe functions B, which also can be provided optionally to UE B, directly to be found for WLAN and leads to UE A
The auxiliary information of letter.
Invention content
Therefore, it finds method the present invention relates to the D2D suitable for UE and network entity and uses the UE and net of the method
Network entity.
In in one aspect of the invention, the D2D that the present invention relates to a kind of suitable for UE has found method, includes at least but not
It is limited to：It originates D2D discovery procedures and there are the first window values, wherein first window values represent time window and are positive number；Transmitting packet
Include the first neighbouring discovery request of first window values；The described first neighbouring discovery in response to transmitting asks and detects and cancel thing
Part cancels the D2D discovery procedures；In response to the cancellation event detected, if first window values be reduced to it is specific
Threshold value then stops the D2D discovery procedures；And if there is no another neighbouring discoveries to ask in the UE, in response to
The cancellation event that receives and emitting, which is cancelled the first of the D2D discovery procedures and cancelled, neighbouring finds request.
In another aspect of the invention, it the present invention relates to a kind of UE, includes at least but is not limited to；It is wireless for emitting
The transmitter of data, the receiver for receiving wireless data and the processing circuit for being couple to the transmitter.The processing
Circuit is configured to：It originates D2D discovery procedures and there are a window values, wherein the window values represent time window and are positive number；Transmitting
The first neighbouring discovery request including the window values；The described first neighbouring discovery in response to transmitting asks and detects cancellation event
To cancel the D2D discovery procedures；In response to the cancellation event detected, if the window values are reduced to specific threshold,
Then stop the D2D discovery procedures；And if there is no another neighbouring discovery requests in the UE, in response to receiving
The cancellation event and emitting cancel the cancellations of the D2D discovery procedures and neighbouring find to ask.
In another aspect of the invention, the present invention relates to a kind of D2D suitable for network entity to find method, at least
Including but not limited to：The the first neighbouring discovery request for executing network assistance (network assisted) D2D discovery procedures is received,
Wherein described first neighbouring discovery request includes the first window values, and first window values are nonnegative number；Described in receiving
First neighbouring discovery asks and executes neighbor estimation and user equipment (UE) state estimation；In response to the neighbor estimation of execution
Cancel the network assistance D2D discovery procedures with the UE state estimations, wherein cancelling the network assistance D2D discovery procedures
Including neighbouring discovery request and transmitting canceling position report request are cancelled in transmitting.
In another aspect of the invention, it the present invention relates to a kind of network entity, includes at least but is not limited to：For sending out
Penetrate the transmitter, the receiver for receiving signal and the processing electricity for being couple to the transmitter and the receiver of signal
Road.The processing circuit is configured to：It is received via the receiver including network level finder identifier (ID), application
The first of the ID and application layer person of being found ID cancels neighbouring request；Cancel neighbouring request, warp in response to described first received
It is neighbouring to emit the second cancellation including the network level finder ID and network level person of being found ID by the transmitter
Request；Cancel neighbouring request in response to described the second of transmitting, receives via the receiver and cancel corresponding to described second
First confirmation signal of neighbouring request；And first confirmation signal in response to receiving, it is sent out via the transmitter
Penetrate the second confirmation signal for cancelling neighbouring request corresponding to described first.
In another aspect of the invention, the present invention relates to a kind of D2D suitable for network entity to find method, at least
Including but not limited to：Receive comprising network level finder identifier (ID), application ID and the application layer person of being found ID first
Cancel neighbouring request；It includes the network level finder ID to cancel neighbouring request in response to described first received and emit
Cancel neighbouring request with the second of the network level person of being found ID；Cancel neighbouring request in response to described the second of transmitting and receives
The first confirmation signal for cancelling neighbouring request corresponding to described second；And first confirmation signal in response to receiving and
Transmitting corresponds to the described first the second confirmation signal for cancelling neighbouring request.
In order to make features described above of the invention and advantage it is understood that the exemplary implementation equipped with attached drawing is described in detail below
Example.It should be understood that the above general description and the following detailed description are exemplary, and it is desirable that the present invention is explained further.
However, it should be understood that this general introduction may and not contain all aspects of the invention and embodiment, therefore not should understand that
For limitation of the present invention.Moreover, protection scope of the present invention should include apparent to those of ordinary skill in the art
Improvement and modification.
Description of the drawings
The present invention includes attached drawing to further understand the present invention, and attached drawing is incorporated in this specification and constitutes this specification
A part.Described description of the drawings the embodiment of the present invention, and be described below together explaining the principle of the present invention.
Fig. 1 is the exemplary network architecture found so as to processing EPC levels.
Fig. 2 is the general calling flow that EPC levels ProSe has found.
Fig. 3 is the network shown in the angle in an exemplary embodiment according to the present invention from the UE with ProSe abilities
Assist the flow chart of ProSe discovery procedures.
Fig. 4 is the ProSe discovery procedures that the UE with ProSe abilities is originated in an exemplary embodiment according to the present invention
Cancelbot.
Fig. 5 is the cancelbot for the ProSe discovery procedures that UE is originated in another exemplary embodiment according to the present invention
(cancellation procedure)。
Fig. 6 is that the EPC levels ProSe assisted by network entity one of according to an exemplary embodiment of the invention had found
The flow chart of journey.
Fig. 7 is the signaling diagram of network assistance ProSe discovery procedures in an exemplary embodiment according to the present invention.
Fig. 8 is between the device shown in the angle in an exemplary embodiment according to the present invention from user equipment (UE)
(D2D) method is found.
Fig. 9 is that (D2D) is sent out between device shown in the angle in an exemplary embodiment according to the present invention from network node
Existing method.
Figure 10 is the exemplary UE according to this exposure.
Figure 11 is the demonstration network entity according to this exposure.
Accompanying drawings symbol description
101：First user equipment
102：Second user equipment
103：E-UTRAN (E-UTRAN)
104：ProSe functions
105：Mobility management entity (MME)
106：Secure user plane location platform (SLP)
107：ProSe application servers
511：UE A
512：ProSe functions A
513：Application server
514：UE B
515：ProSe functions B
516：SLP A
517：SLP B
611：UE A
612：UE B
613：ProSe functions A
614：ProSe functions B
616：SLP A
617：SLP B
851：UE A
852：ProSe functions A
853：Application server
854：ProSe functions B
855：UE B
856：User attaching server (HSS)
857：Mobility management entity (MME)
858：SLP B
859：SLP A
1101：Processing circuit
1102：Analogue-to-digital converters/digital-analog convertor
1103：Transmitter
1104：Receiver
1105：Antenna element
1201：Processing circuit
1202：Communication protocol circuits
1203：Transmitter
1204：Receiver
LTE-Uu、PC1、PC2、PC3、PC4a、PC4b、PC5、S1、S6a：Interface
S201~S208, S401~S406, S501~S506, S601~S604, S701~S709, S801~, S812,
S901~S905, S1001~S1003, S1004a, S1004b：Step
Specific implementation mode
With detailed reference to the exemplary embodiment of the present invention, the example is illustrated in the accompanying drawings.Whenever possible, phase
It is used for indicating same or similar part in schema and description with component symbol.
The present invention proposes the ProSe discovery procedures suitable for UE and network entity.The present invention also proposes to use the ProSe
The UE and network entity of discovery procedure.The offer of the present invention includes to make the UE with ProSe abilities and the net with ProSe abilities
Network entity (for example, ProSe functions) can be based on application needs and Network status and user preference with setting and dynamically
Stop ProSe and finds program.Aforementioned ProSe functions are, for example, the entity in the core networks such as EPC, and can provide neighbouring clothes
Business.The exemplary embodiment of the present invention will also include that will minimize and avoid and position with the relevant network signal of neighbor estimation
Update and the relevant unnecessary computing capability of neighbor estimation.
The exemplary embodiment of the present invention proposed includes two parts that can integrally or independently implement.One is to be based on
The exchanger (hand-shaking procedure) of UE, is designed to even if the window values (window in original setting
Value also dynamically allow to cancel ProSe discovery programs before) expiring.The other is modified network assistance program, is used for
Dynamically terminate ongoing ProSe discovery procedures.The solution proposed can be by using the network architecture shown in FIG. 1
Implement, but signaling procedure (signaling procedure) and the functionality of UE and ProSe functions are changed.Clearly
It says, neighbouring request mandatum cassatorium will dynamically be sent to network entity by UE A, for example, written being retouched with corresponding based on Fig. 3 to Fig. 5
The ProSe functions of stating.By using between UE and the network entity such as ProSe functions and location server cancellation signaling or
Suitable parameter, UE can effectively terminate ongoing ProSe discovery procedures.
Fig. 3 is that the network assistance ProSe shown in the angle in an exemplary embodiment according to the present invention from UE had found
The flow chart of journey.In step S401, after receiving starting (initiate) ProSe and finding the event triggering of program, UE
By the network entity (for example, ProSe functions 104 of Fig. 1) of the neighbouring request of transmitting to network.For example, it is opened in the user of UE
Event triggering occurs when dynamic or restarting ProSe applications or ProSe related applications." window " value institutes of the UE in the neighbouring request of starting
In a period of instruction, whether neighbouring request is neighbouring or possible neighbouring for detecting another D2D UE with ProSe abilities.It is neighbouring
Request (for example) can be consistent with the version of the LTE specifications such as such as TR 23.703v1.0.0.After receiving neighbouring request, network
Entity, such as ProSe functions 104 can originate ProSe and find program.Neighbouring request may include estimated window values, so that
Before window values are expired, neighbouring request can keep effective, and the startup of position report and maintain during also can be indicated by window values
It is carried out.
In step S402, before window values are expired, UE judges whether to receive any termination request, for example, from application layer
Find that program or the termination triggered by completing ProSe discovery programs are asked to terminate ProSe.If not receiving termination to ask
It asks, then in step S403, as long as window values are not yet expired, UE continuously will wait for neighbouring response (Proximity from network
Response), or back to step S402, UE termination will be waited for ask from application layer.Neighbouring response may include arbitrary value, and can
It is consistent with current LTE specification (such as TR 23.703v1.0.0).If termination request is received in step S402,
In step S404, UE will determine whether window values expire.If window values have expired, ProSe has found EP (end of program).If window values are still
Not expired, then in step S405, UE may be determined whether are another effectively neighbouring request from another application or UE
Have received another trigger event into ProSe discovery procedures.If not yet receiving another trigger event or neighbouring request,
Then in step S406, UE will signal neighbouring request of the network entity cancellation to ProSe functions.Otherwise, if really
Surely another trigger event or neighbouring request are had received, then the process continues in step S403.It is carried as shown in Figure 3
The ProSe gone out has found that the cancelbot of program can be according at least two exemplary implementations of Fig. 4, Fig. 5 and its correspondence written description
Example is implemented.
Fig. 4 is the cancelbot for the ProSe discovery procedures that UE is originated in an exemplary embodiment according to the present invention.Fig. 4
Cancelbot can correspond to the step S406 of Fig. 3.However, it will be apparent to those skilled in the art that, the cancellation of Fig. 4
Program can be independently of the discovery procedure in Fig. 3, therefore can not correspond to step S406.In step S501, UE A 511 emit
First cancels neighbouring request (Cancel Proximity Request), will be routed to network entity, such as the ProSe of EPC
Function A 512.First cancels neighbouring request containing the parameter for being not limited to EPSID_A, application ID, ALUID_A and ALUID_B etc..
Application ID identifies third-party application server platform or the application server (App servers) 513 of Fig. 4.EPSID_A is UE A
511 ProSe subscribers ID.ALUID_A and ALUID_B is the application layer User ID of UE A 511 and UE B 514 respectively.It is connecing
After receiving the neighbouring request of the first cancellation, ProSe discovery procedures are handled to be cancelled by ProSe functions A 512.
In step S502, cancel neighbouring request in response to first received, ProSe functions A 512 cancels second
Neighbouring request is emitted to ProSe functions B 515, to notify ProSe functions B 515 and then notice SLP A 516 and SLP B
The 517 neighbouring requests of cancellation D2D originated by UE A 511.The neighbouring request of second cancellation, which contains, is not limited to EPSID_A and EPSID_B
Parameter.EPSID_B is the ProSe subscribers ID of UE B 514.In step S503, cancel in response to second received neighbouring
Request, ProSe functions A 512 is by the first canceling position service (Location Services, LCS) position report request
(Location Reporting Request) is emitted to SLP A 516 to cancel the position report of UE A 511.Similarly,
In step S504, the second positions cancellation LCS report request is emitted to SLP B 517 to cancel UE by ProSe functions B 515
It reports the position of B 514.In step S505, cancel neighbouring request receiving second emitted from ProSe functions A 512
Afterwards, ProSe functions B 515 cancels neighbouring request confirmation (Cancel Proximity Request Ack) by first and is emitted to
ProSe functions A 512 for confirmation second cancels the reception of neighbouring request signal.Cancel neighbouring ask in response to first received
Confirmation is asked, ProSe functions A 512 cancels second is emitted to UE A 511 to notify to walk to UE A 511 adjacent to request confirmation
The first confirmation for cancelling neighbouring request signal is confirmed in rapid S501.
Fig. 5 is the cancelbot for the ProSe discovery procedures that UE is originated in another exemplary embodiment according to the present invention.Figure
5 cancelbot can correspond to the step S401 or step S406 of Fig. 3.In step s 601, UE A 611 neighbouring are asked first
It asks and is emitted to ProSe functions A 613.First neighbouring request containing be not limited to EPSID_A, application ID, ALUID_A, ALUID_B,
" window ", " range " (range class), the ginseng of " position of A " (position of UE A 611) and " the WLAN indicators " optionally selected
Number.EPSID_A, application ID, ALUID_A, ALUID_B and " range " are as previously described." window " value is nonnegative value, in " window " Zhi Suo circle
The interior permission network of specified time interval that is fixed or being defined about " window " value disposes (handle) adjacent service.In this time interval
Interior, network can track the position of UE and continue ProSe functions B and ProSe functions A, UE B, UE A and other related realities in real time
Interactive program between body." window " value may be configured as predetermined value to notify to cancel or further limit ProSe discovery procedures
Duration.For example, window values can be zero (" window "=0), and such as executing step S404, ProSe discovery will be effectively revoked.
" WLAN indicators " is foregoing WLAN link layers ID.
In step S602, in response to the first neighbouring request received, ProSe functions A 613 is by second adjacent to request
It is emitted to ProSe functions B 614.ProSe functions B 614, which contains, is not limited to EPSID_A, EPSIB_B, " window ", " position of A "
The parameter of (position of UE A 611) and " the WLAN indicators " optionally selected." window " value may be configured as predetermined value to notify
Cancel or further limit the duration of ProSe discovery procedures.In step S603, neighbouring asked in response to second received
It asks, the first positions cancellation LCS report request is emitted to SLP B 617 to cancel about UE B 612 by ProSe functions B 614
Position report update.Similarly, in step s 604, in response to the receive first neighbouring request, ProSe functions A
Second positions cancellation LCS report request is emitted to SLP A616 to cancel the update that the position of UE A 611 is reported by 613.
Network side can also be responsive to assist ProSe to find cancelbot in the neighbouring request received from UE.Substantially, it rings
The neighbouring request with initial window values that Ying Yucong UE are received, what network entity (such as ProSe functions) may be in response to detect
Special parameter and terminate ProSe discovery procedures.ProSe functions will then execute down-stream to be based on comprising paging
(paging) UE connection status or recorded in MME or from position and/or application server obtain UE subdistrict position or
Range class and obtain the state of UE and neighbouring.ProSe functions will then terminate neighbouring discovery procedure and to other ProSe functions and
Location server notifies termination procedure.ProSe functions can also be by will cancel message adjacent to request and be emitted to UE to these UE
Notice is cancelled.By aforementioned network proposed by the present invention auxiliary ProSe find cancelbot details further by Fig. 6 to Fig. 7 with
It corresponds to written description explanation.
Fig. 6 is the EPC level ProSe discovery procedures assisted by network entity in an exemplary embodiment according to the present invention
Flow chart.Network entity can be the independent community (stand-alone entity) with one group of particular functionality, or can
It is considered as be embedded in other entities of core network one group of particular functionality.Network entity can be in (for example) EPC
ProSe functions.In step s 701, in response to receiving neighbouring request of the UE A receptions to UE B, ProSe work(by ProSe functions A
Energy A will determine whether " window " value in neighbouring request has been set to particular value." window " value can be arranged by UE, and if ProSe is sent out
Existing process will terminate, then particular value may be configured as zero (" window "=0).If ProSe functions A has determined that " window " value is set as zero,
Then in step S704, ProSe cancellation requests are emitted to the ProSe functions B corresponding to UE B by ProSe functions A.In step
In S705, cancellation request will also be sent to the location server A (LCSA) and location server B for corresponding to UE A and UE B
(LCSB) it is updated to cancel follow-up location.
If in step s 701, " window " value is not yet set as zero, then in step S702, such as ProSe functions A or
The network entities such as ProSe functions B will update " window " value.In step S703, after update " window " value, ProSe functions A and/
Or ProSe functions B will obtain the estimated position of the state and UE B of the connection of UE B.In step S706, ProSe functions
A and/or ProSe functions B by based between (for example) UE A and UE B initial relative distance (that is, range) or based on UE A and
UE B are located in identical or different community (cell) and determine whether UE A and UE B are neighbouring within the period that " window " value indicates
Or whether it is estimated as neighbouring.If being determined as neighbouring by UE A and UE B or being estimated as generally adjacent, will then execute
Step S707；Otherwise, it will be changed to then execute step S704.If UE A and UE B are determined as it is neighbouring, in step S707
In, ProSe functions A and/or ProSe function B will determine whether UE B are connected to network.If UE B have connected, in step
In S708, ProSe function A and/or ProSe functions B will execute follow-up neighbouring requestor.If UE B are not connected, in step
In rapid S709, ProSe functions A and/or ProSe function B will determine whether UE B have disconnected.If UE B are determined as breaking
It opens, then will execute step S704.Otherwise, if not being determined as disconnecting by UE B, ProSe function A and/or ProSe functions B will
(page) UE B are paged in step S710 and then execute step S708.
Fig. 7 is the signaling diagram of network assistance ProSe discovery procedures in an exemplary embodiment according to the present invention.In step
In S801, UE A 851 transmitting containing be not limited to EPSID_A, application ID, ALUID_A, ALUID_B, " window ", " range ", " A's
The neighbouring request of the first of the parameter of position " (position of UE A) and " the WLAN indicators " optionally selected.These parameters are retouched
It states identical as foregoing description.In step S802, in response to the first neighbouring request received, ProSe functions A 852 can will contain
There is the mapping request (Map Request) for being not limited to the parameters such as ALUID_A and ALUID_B to be sent to ProSe application servers
853, to ask application server 853 to provide EPC ProSe subscriber's ID and ProSe functional identities of target UE B 855
(PFID).ProSe functions A 852 will store application layer User ID (ALUID_A and ALUID_B), until neighbouring alarm program
Until execution or until neighbouring request keep effective time window it is expired until.
Hereafter, application server 853 will check that the specific ProSe of application from UE B 855 permits to ensure to have allowed
UE A 851 have found UE B 855.In this situation, in step S803, application server 853, which will contain, to be not limited to
The mapping response (Map Response) of the parameters such as EPSID_B and PFID_B is sent to ProSe functions A 852, wherein PFID_B
For the ProSe functional identities of ProSe functions B 854.In step S804, ProSe functions A 852 will be based on the first neighbouring request
Second neighbouring request is transmitted to ProSe functions B 854.Second neighbouring request containing be not limited to EPSID_A, EPSIB_B, " window ",
The parameter of " position of A " (position of UE A 851) and " the WLAN indicators " optionally selected.
In step S805, ProSe functions B 854 can perform neighbor estimation (proximity estimation).Citing
For, based on the EPSID_B received in step S804, ProSe functions B854 can retrieve subscriber's record of UE B 855.Citing
For, ProSe functions B 854 can be asked via user attaching server (Home Subscriber Server, HSS) 856
The position of UE B 855 finally known, and realize UE position enquirings.In step S806, ProSe functions B 854 can also pass through
Emit the status request containing the parameter for being not limited to UE B ID (it is the ID of UE B 855) to mobility management entity (MME)
857 obtain the connection status of UE B 855.In response to the status request message of transmitting, ProSe functions B 854 will be from MME
857 receive the condition responsive of the ID containing UE B 855.Condition responsive may indicate that UE connection status, for example, idle state, separation
State and active state.
By ProSe functions in last known position, step S804 based on the UE B 855 obtained via HSS 856
The connection status of UE B855 in the position and window values and step S807 of the UE A 851 that A 852 is provided, in step S808,
ProSe functions B 854 will execute neighbor estimation and UE connection status decisions.Assuming that ProSe functions B 854 has determined that UE A 851
Mutually adjacent or UE B 855 it can not possibly be disconnected or can not possibly connect in requested time window with UE B 855, then
ProSe functions B 854 can determine that terminating ProSe finds program.In step S809, ProSe functions B 854 can be by that will cancel
The positions LCS report request is sent to SLP B 858, to cancel the update for the position for carrying out UE B 855 by SLP B 858.
In step S810, the neighbouring request of the cancellation with appropriate cause value can be emitted to ProSe A by ProSe functions B 854
852, to be cancelled to the A852 notice ProSe discovery procedures of ProSe functions.Disappear in response to the neighbouring request of cancellation received
Breath, in step S811, ProSe functions A 852 will cancel LCS positions report request be emitted to SLP A 859 so as to cancel by
The update of the position for the UE A 511 that SLP A 859 are carried out.In step S812, ProSe functions A 852, which will have, is equal to UE shapes
The neighbouring request of cancellation of value of the reason of state is emitted to UE A 851 to notify UE that A 851ProSe discovery procedures have been cancelled.
From between the proposed device of the angle of user equipment (UE) general introduction in Fig. 8 exemplary embodiments according to the present invention
(D2D) method is found.In step S901, UE originates D2D discovery procedures and has a window values, wherein the window values represent the time
Window and be positive number.In step S902, UE transmittings first comprising at least described window values are neighbouring to find request.In step S903
In, UE detects a cancellation event (cancellation event) to cancel in response to the first neighbouring discovery request of transmitting
D2D discovery procedures.Cancellation event may be from the hardware trigger originated by the hardware component of UE or be produced by the application layer of (for example) UE
Raw software triggering.In step S904, in response to the cancellation event detected, if the window values are reduced to specific threshold,
Then UE stops D2D discovery procedures.In step S905, if in UE there is no it is another it is neighbouring find request, UE in response to
The cancellation that the cancellation event that receives and emitting cancels D2D discovery procedures neighbouring finds to ask.
The described first neighbouring network entity that finds request and can be emitted in Evolved Packet Core (EPC) network.It is described
Transmitting, which is cancelled, neighbouring finds that request may include transmitting as clear request and with being not limited to network level identifier (ID), service
The cancellation of the parameter of device ID, application layer finder ID and/or the application layer person of being found ID is neighbouring to be found to ask.The transmitting is cancelled
It is neighbouring to find that request may include that transmitting has the window values for being not limited to a predetermined value, network level ID, server ID, application layer hair
The second of the parameters such as existing person ID, the application layer person of being found ID, range class and finder's location information cancels neighbouring discovery request.Before
Zero can be (for example) set as by stating window values.Described second parameter for cancelling neighbouring discovery request can also include WLAN (WLAN)
Link layer ID.
The method of Fig. 8 also may include the cancellation event in response to detecting and from network entity etc. (detect) to be detected neighbour
It includes UE reason states (cause that nearly response and the network entity reception out of Evolved Packet Core (EPC) network, which have,
Status the third of parameter) cancels neighbouring discovery request.
Fig. 9 is summarized one of according to an exemplary embodiment of the invention from the angle of network entity between proposed device
(D2D) method is found.In step S1001, the neighbouring discovery that network entity receives execution network assistance D2D discovery procedures is asked
It asks, the neighbouring discovery request includes an at least window values.In step S1002, network entity is in response to the neighbouring hair that receives
It now asks and executes neighbor estimation and user equipment (UE) state estimation.In the step s 1003, based on being held in step S1002
Row neighbor estimation and the result network entity of UE state estimations cancel network assistance D2D discovery procedures.Based in step S1003
In, network entity cancels network assistance D2D discovery procedures, and network entity cancels neighbouring find by emitting in step S1004a
It asks and by emitting canceling position report request in step S1004b.
The method of Fig. 9 can also include receive second it is neighbouring find request, second it is neighbouring find request comprising be set as zero or
Less than the second window values of the value of initial window values, and cancel network assistance D2D discovery procedures.The network entity can be evolution
ProSe functions in type block core (EPC), and according to a version of third generation partner program (3GPP) specification
(version) it operates.Aforementioned execution neighbor estimation and user equipment (UE) state estimation may include：Obtain finder
(discoverer) the first neighbor information；The second neighbor information of the acquisition person of being found (discoveree)；And based on the
One neighbor information and the second neighbor information and determine whether finder and the person of being found neighbouring or whether estimated within the window values period
It is calculated as neighbouring.
The method of Fig. 9 can include also the UE states for obtaining the person of being found, for example, idle state, active state and and network
The state of separation, and the state based on the person of being found and determine whether cancel network assistance D2D discovery procedures.The acquisition is sent out
Now the UE states of person may include status request being emitted to mobility management entity (MME), and wherein status request includes being found
Person ID；And the condition responsive of the UE states of the instruction person of being found is received from MME.The method of Fig. 9 can also include to receive to have packet
The cancellation for including the parameters such as network level identifier (ID), server ID, application layer finder ID and the application layer person of being found ID is adjacent
Nearly request.
Figure 10 is demonstration UE according to the present invention.UE at least contains (but not limited to) processing circuit 1101, is couple to
Analog to digital (analog-to-digital, A/D) converter/digital-to-analog (digital-to-analog, D/A) converter
1102, transmitter 1103, receiver 1104 and one or more antenna elements 1105.Transmitter 1103 and receiver
1104 wirelessly emit down link signal and receive uplink signal.Transmitter 1103 and receiver 1104 can also be held
Row operation such as low noise amplification, impedance matching, mixing, up-conversion or down coversion, filtering, amplification.(A/D)/(D/A) it converts
Device 1102 from analog signal format is converted to digital signals format during being configured to uplink signal processing and in downlink
During link signal processing analog signal format is converted to from digital signals format.Processing circuit 1101 is configured to processing number
It signal and executes foregoing example embodiment (especially Fig. 3 to Fig. 6 and the corresponding written descriptions of Fig. 8) according to the present invention and is carried
The D2D gone out has found the program of method.It is compiled moreover, processing circuit 1101 can optionally be couple to non-transitory storage media with storing
Range code, device configuration, code book (codebook), buffered or permanent data etc..The function of processing circuit 1101 can lead to
It crosses and is implemented using programmable units such as such as microprocessor, microcontroller, dsp chip, FPGA.The function of processing circuit 1101
The function that can be also implemented with independent electronic or IC, and be executed by processing circuit 1101 may be implemented in the net of hardware or software
In domain.
Figure 11 is demonstration network entity according to the present invention.Demonstration network entity can be the ProSe work(in EPC cores
Can, and include at least but be not limited to：Processing circuit 1201, is couple to communication protocol circuits 1202, and communication protocol circuits
1202 are couple to transmitter 1203 and receiver 1204.Transmitter 1203 and receiver 1203 are modulated for transmitting and receiving
(modulated) signal, the modulated signal can be RF wireless signals, optical signalling or the letter sent via cable
Number.Communication protocol circuits 1202 can be independently of processing circuit 1201 or for processing circuit 1201 intrinsic part, and number is disappeared
Breath is converted to and the format of the various interface compatibilities such as PC2, PC3, PC4, PC4x.Processing circuit 1201 is configured to processing number
Word signal and execute foregoing example embodiment (especially Fig. 4 to Fig. 7 and the corresponding written descriptions of Fig. 9) according to the present invention
The D2D proposed has found the program of method.Moreover, processing circuit 1201 can optionally be couple to non-transitory storage media to deposit
Store up programming code, device configuration, code book, buffered or permanent data etc..The function of processing circuit 1201 can be by using
Such as the programmable units such as microprocessor, microcontroller, dsp chip, FPGA are implemented.The function of processing circuit 1201 also can be used
Independent electronic or IC also may be implemented in the domain of hardware or software come the function implementing, and executed by processing circuit 1201
It is interior.
In view of foregoing description, the present invention is suitable for wireless communication system, and the needs and network that can be applied based on ProSe
Situation and user preference dynamically stop ProSe and find program with being arranged.By that will determine that relevant network is believed with neighbouring
Order minimize and avoid with the relevant unnecessary computing capability of location updating and neighbor estimation, can reduce the load of network and
The efficiency of network can be improved.
Element, action or instruction in the detailed description of the revealed embodiment of present application should not be construed as to this hair
It is absolute key or necessary for bright, unless explicitly described.Moreover, as used herein, word " one " also may be used
Including more than one project.If being intended to mean that only one project, term " single " or similar language will be used.In addition, such as this
Any one of used in text, term before the list of multiple projects and/or multiple project kinds " " wish to include institute
State project and/or project kind individually or combine other projects and/or other project kinds " any one of ", " in appoint
What is combined ", " in any number of " and/or " in multiple any combinations ".In addition, as used herein, term " collection
Close " wish to include any quantity project, including zero.In addition, as used herein, term " quantity " is wished comprising any
Quantity, including zero.
It will be understood by those skilled in the art that without departing from the scope or spirit of the invention, it can be to institute
The structure of embodiments of the disclosure carry out various modifications and changes.In view of the foregoing, it is desirable to which the present invention covers the modification of the present invention
And variation, as long as the modifications and variations are fallen within the scope of the appended claims.
Claims (19)
1. method is found between a kind of device suitable for user equipment, including：
Originate device between discovery procedure and have the first window values, wherein first window values represent time window and be positive number；
Transmitting includes the first neighbouring discovery request of first window values；
Cancellation event is detected in response to the described first neighbouring discovery request of transmitting to cancel discovery procedure between described device；
Stop described device if first window values are reduced to specific threshold in response to the cancellation event detected
Between discovery procedure；And
If in the user equipment there is no it is another it is neighbouring find request, in response to the cancellation event that receives
The neighbouring discovery request of the first cancellation of discovery procedure between described device is cancelled in transmitting,
Discovery procedure discovery procedure between network assistance device wherein between described device.
2. finding method between the device according to claim 1 suitable for user equipment, which is characterized in that the cancellation thing
Part is generated by the hardware trigger of the user equipment or the application layer-triggered of the user equipment.
3. finding method between the device according to claim 1 suitable for user equipment, which is characterized in that transmitting described the
One, which cancels neighbouring discovery request, includes：
It includes that network level identifier, server identifier, application layer finder identifier and/or application layer are sent out that transmitting, which has,
Described the first of the parameter of existing person's identifier cancels neighbouring discovery request.
4. finding method between the device according to claim 1 suitable for user equipment, which is characterized in that transmitting described the
One, which cancels neighbouring discovery request, includes：
It includes the second window values that predetermined value is arranged, network level identifier, server identifier, application layer finder that transmitting, which has,
Identifier, the application layer person of being found identifier, the parameter of range class and finder's location information second are cancelled and neighbouring find to ask
It asks.
5. finding method between the device according to claim 4 suitable for user equipment, which is characterized in that second window
Value is set as zero or is set smaller than first window values.
6. finding method between the device according to claim 4 suitable for user equipment, which is characterized in that described second takes
The parameter that neighbouring discovery is asked that disappears further includes wireless local area network link layer identifier.
7. finding method between the device according to claim 1 suitable for user equipment, which is characterized in that described first is adjacent
The nearly network entity for finding request and being launched into Evolved Packet Core network.
8. finding method between the device according to claim 1 suitable for user equipment, which is characterized in that further include：
In response to the cancellation event neighbouring response is detected from network entity.
9. finding method between the device according to claim 8 suitable for user equipment, which is characterized in that further include：
It is received from the network entity in Evolved Packet Core network with the ginseng for including user equipment reason state
Several thirds cancels neighbouring discovery request.
10. a kind of user equipment, including：
Wireless transmitter, for emitting wireless data；
Wireless receiver, for receiving wireless data；
Processing circuit is couple to the wireless transmitter and the wireless receiver and is configured to：
Originate device between discovery procedure and have a window values, wherein the window values represent time window and be positive number；
Emit the first neighbouring discovery request including the window values by using the transmitter；
Cancellation event is detected in response to the described first neighbouring discovery request of transmitting to cancel discovery procedure between described device；
In response to the cancellation event detected, if the window values are reduced to specific threshold, stop sending out between described device
Existing process；And
In response to the cancellation event received and if there is no another neighbouring discoveries to ask in the user equipment,
Then by using the transmitter come emit cancel described device between discovery procedure cancellation it is neighbouring find to ask,
Discovery procedure discovery procedure between network assistance device wherein between described device.
11. method is found between a kind of device suitable for network entity, including：
The first of discovery procedure is adjacent to request is found between reception execution network assistance device, wherein described first asks adjacent to discovery
Including the first window values, first window values are nonnegative number；
Neighbor estimation and status of user equipment estimation are executed in response to the described first neighbouring discovery request received；
The neighbor estimation in response to execution and status of user equipment estimation and cancel and sending out between the network assistance device
Existing process, wherein discovery procedure includes between cancelling the network assistance device：
Neighbouring discovery request is cancelled in transmitting；And
Emit canceling position report request.
12. finding method between the device according to claim 11 suitable for network entity, which is characterized in that further include：
Reception second is neighbouring to find request, and the described second neighbouring discovery request includes the second window values for being set as zero；And
Cancel discovery procedure between the network assistance device.
13. finding method between the device according to claim 11 suitable for network entity, which is characterized in that the network
Entity is the adjacent service function being located in Evolved Packet Core, and according to a version of third generation partner program specification
And it operates.
14. finding method between the device according to claim 11 suitable for network entity, which is characterized in that described in execution
Neighbor estimation and status of user equipment estimation include：
Obtain the first neighbor information of finder；
Obtain the second neighbor information for the person of being found；
Whether the finder and the person of being found are determined based on first neighbor information and second neighbor information
It is neighbouring.
15. finding method between the device according to claim 14 suitable for network entity, which is characterized in that further include：
The status of user equipment of the person of being found described in acquisition；And
State based on the person of being found and determining whether cancels discovery procedure between the network assistance device.
16. finding method between the device according to claim 15 suitable for network entity, which is characterized in that the institute of acquisition
The status of user equipment for stating the person of being found includes：
Status request is emitted to mobility management entity, wherein the status request includes the person's of being found identifier；And
The condition responsive of the status of user equipment for the person of being found described in instruction is received from the mobility management entity.
17. finding method between the device according to claim 11 suitable for network entity, which is characterized in that further include：
It includes that network level identifier, server identifier, application layer finder identifier and application layer are found that reception, which has,
The neighbouring request of the cancellation of the parameter of person's identifier.
18. finding method between the device according to claim 17 suitable for network entity, which is characterized in that further include：
By another network entity cancelled neighbouring request and be routed in network.
19. finding method between the device according to claim 11 suitable for network entity, which is characterized in that the network
Entity is the adjacent service function of Evolved Packet Core network.
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| CN201810101372.1A CN108184222B (en) | 2014-01-13 | 2015-01-05 | Network entity and method for discovering among devices suitable for network entity |
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| US201461926927P | 2014-01-13 | 2014-01-13 | |
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| US14/578,505 | 2014-12-22 | ||
| US14/578,505 US9288656B2 (en) | 2014-01-13 | 2014-12-22 | Device to device discovery method for user equipment and network entity and user equipment and network entity using the same |
| TW103145941 | 2014-12-27 | ||
| TW103145941A TWI552561B (en) | 2014-01-13 | 2014-12-27 | Device to device discovery method for user equipment and network entity and user equipment and network entity using the same |
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| CN101772199A (en) * | 2008-11-24 | 2010-07-07 | 华为终端有限公司 | Method and device for establishing D2D network |
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| CN104780497A (en) | 2015-07-15 |
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